male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation COULD SING
Irregular verb: sing - sang - sung
Affirmation
Simple form
I could singyou could sing
she could sing
we could sing
you could sing
they could sing
V-ing form
I could be singingyou could be singing
she could be singing
we could be singing
you could be singing
they could be singing
Perfect
I could have sungyou could have sung
she could have sung
we could have sung
you could have sung
they could have sung
V-ing perfect
I could have been singingyou could have been singing
she could have been singing
we could have been singing
you could have been singing
they could have been singing
Negation
Simple form
I could not singyou could not sing
she could not sing
we could not sing
you could not sing
they could not sing
V-ing form
I could not be singingyou could not be singing
she could not be singing
we could not be singing
you could not be singing
they could not be singing
Perfect
I could not have sungyou could not have sung
she could not have sung
we could not have sung
you could not have sung
they could not have sung
V-ing perfect
I could not have been singingyou could not have been singing
she could not have been singing
we could not have been singing
you could not have been singing
they could not have been singing
Interrogative form
Simple form
could I sing?could you sing?
could she sing?
could we sing?
could you sing?
could they sing?
V-ing form
could I be singing?could you be singing?
could she be singing?
could we be singing?
could you be singing?
could they be singing?
Perfect
could I have sung?could you have sung?
could she have sung?
could we have sung?
could you have sung?
could they have sung?
V-ing perfect
could I have been singing?could you have been singing?
could she have been singing?
could we have been singing?
could you have been singing?
could they have been singing?
Interro-negative form
Simple form
could I not sing?could you not sing?
could she not sing?
could we not sing?
could you not sing?
could they not sing?
V-ing form
could I not be singing?could you not be singing?
could she not be singing?
could we not be singing?
could you not be singing?
could they not be singing?
Perfect
could I not have sung?could you not have sung?
could she not have sung?
could we not have sung?
could you not have sung?
could they not have sung?
V-ing perfect
could I not have been singing?could you not have been singing?
could she not have been singing?
could we not have been singing?
could you not have been singing?
could they not have been singing?